Understanding “Galilean” vs. “Keplerian” and “Wide Angle” vs. “Expanded Field” telescopes

I thought that this discussion might shed some light on how bioptic telescopes are named and what the names represent.

As is well known, bioptic telescopes are available in two optical designs—Galilean and Keplerian. Each has its distinct characteristics and attributes. We prescribe them, of course, to support our patients’ range of distance-seeing needs and activities, not just for bioptic driving.

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